LTC3614 LINER [Linear Technology], LTC3614 Datasheet - Page 7

• Manufacturer Part Number: LTC3614
• Description: 4A, 4MHz Monolithic Synchronous Step-Down DC/DC Converter
• Manufacturer: LINER [Linear Technology]

TYPICAL PERFORMANCE CHARACTERISTICS
0.045
0.040
0.035
0.030
0.025
0.020
0.015
0.010
0.005
–0.5
–1.5
–2.5
–1.0
–2.0
0.01
100
1.0
0.5
0.1
10
0
0
1
2.25
–50
2.25
Switch On-Resistance
vs Temperature
Frequency vs Input Voltage
Dynamic Supply Current vs Input
Voltage without AVP Mode
FREQ = 2.25MHz
–30
2.75
2.75
–10
MAIN SWITCH
SYNCHRONOUS SWITCH
FORCED CONTINUOUS MODE
3.25
PULSE-SKIPPING MODE
3.25
Burst Mode OPERATION
TEMPERATURE (°C)
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
10
30
3.75
3.75
50
4.25
4.25
70
4.75
4.75
90
110
3614 G22
5.25
3614 G25
3614 G28
5.25
130
3000
2500
2000
1000
4500
4000
3500
1500
7000
6000
5000
4000
3000
2000
1000
8000
0.01
500
100
0.1
10
0
0
1
–50
–50
0
Frequency vs Resistor on
RT/SYNC Pin
Switch Leakage vs Temperature,
Main Switch
Dynamic Supply Current vs
Temperature without AVP Mode
FREQ = 2.25MHz
–30
–30
200
RESISTOR ON RT/SYNC PIN (kΩ)
V
V
V
–10
FORCED CONTINUOUS MODE
–10 10
IN
IN
IN
PULSE-SKIPPING MODE
400
= 2.25V
= 3.3V
= 5.5V
Burst Mode OPERATION
TEMPERATURE (°C)
TEMPERATURE (°C)
10
600
30
30
50
800
50
70
70
1000 1200
90
90
V
110
110 130
3614 G23
3614 G26
3614 G29
IN
1400
= 3.3V, RT/SYNC = SV
130
500mV/DIV
5A/DIV
7000
6000
5000
4000
3000
2000
1000
8000
–0.2
–0.4
–0.6
–0.8
–1.0
–1.2
V
0.8
0.6
0.4
0.2
OUT
0
0
I
–50
L
–50
Frequency vs Temperature
Switch Leakage vs Temperature,
Synchronous Switch
V
Forced Continuous Mode
V
I
V
OUT
OUT
OUT
MODE
–30
–30
= 0A
= 1.8V
Short to GND,
V
V
V
= 1.5V
–10
–10
IN
IN
IN
IN
= 2.25V
= 3.3V
= 5.5V
TEMPERATURE (°C)
TEMPERATURE (°C)
10
10
unless otherwise noted.
100μs/DIV
30
30
LTC3614
50
50
70
70
90 100
90
110
3614 G24
3614 G27
3614 G30
7
3614f
130
130